Underframe center-sill construction for cars and the like.



0. S. PULLIAM. UNDERFRAME CENTER SILL CONSTRUCTION FOR CARS AND THELIKE.

APPLICATION FILED SEPT. 23\ 1,159,534.

Patented Nov. 9, 1915.

OSWALD S. PUIILIAM, OF PITTSBURGH, PENNSYLVANIA.

UNDERFRAME CENTER-SILL CONSTRUCTION FOR CARS AND THE LIKE.

Specification of Letters Patent.

Patented Nov. 9, 1%15.

Application filed September 23, 1909. Serial No. 519,131.

To aZZ whom it may concern Be it known that I, OswALo S. PULLIAM, aresident of Pittsburgh, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inUnderframe Center-Sill Construction for Cars and the like, of which thefollowing is a specification.

This invention relates to an improved under-frame construction for cars,and the like, and the present invention more particularly relates to avnew and improved center-sill or a center-sill constructed in accordancewith the principle of the cantilever.

An object of my invention is to depart from the usual and Well knowntruss construction and to substitute therefor, in a steel underframe forcars, and the like, a center-sill of cantilever construction.

In the accompanying drawings, which illustrate applications of myinvention, F igure 1 is a perspective view of a car-body un derframeembodying my invention; Fig. 2, a perspective view particularly showingan end portion of the center-sill of a slightly modified form from thatshown by Fig. 1.

Referring to the drawings and first to the form of Fig. 1, thecenter-sill comprises two end-portions 2 and 3 each preferably formed asan integral casting and respectively designed to be mounted on andsupported by the respective truck bolsters 1. As illustrated, bothend-portions are formed with a center plate member 5 designed, when theend-portions are mounted on the truck-bolsters, to bear on the centerplate members of saidbolsters. Each of the end-portions 2 and 3comprises laterally extending members 6 and in the form of Fig. 1members 6 constitute a body-bolster. The casting constituting theend-portions of the center-sill projects forwardly and rearwardly of therespective truck bolsters 41 for about an equal distance and the outermembers are provided with means or members 7 adapted to engage thedraft-rigging, not shown. In Fig. 1, I have shown the forwardend-portion of the center-sill extended to and located in the respectiveend-sills 8 of the body underframe. By this arrangement, andparticularly with the free end of the outer member extending into theopening 8 in the end sill, shearing strains at the point of connectionof such outer members and the end sill will be taken up, in addition towhich, the draw-bar connection is retained out of contact with the sidesof the opening and the lateral strains thereof placed on the outermembers, the latter, being in turn supported by such side walls of theopening.

The end portions 2 and 3, of the centersill, are connected by suitableconnecting means 9. In the drawing I have shown two members of channelform as the connecting means, with said members riveted to theend-portions 2 and 3. The laterally extending or cross sills 10 aresecured to the central or connecting member of the center-sill andextend outwardly therefrom to the respective side-sills 11.

In the form of Fig. 2 I have shown a slightly different construction ofthe end portions of the center-sill from that shown by Fig. 1. In thislatter form I have shown the laterally extending members 6 arrangedbetween the middle of the end portions of the sill and the forward andrear ends thereof.

What I claim is:

1. In an underframe construction for cars and in combination, a pair ofbody bolster castings each having integral members on opposite sides ofthe bolster and extending in correspondence with the longitudinal centerof the underframe, said members being of substantially equal length,individual side and end sills, said side sills connecting correspondingbolster ends and having an integral length substantially equal to thedistance between the free ends of the outer members of the casting, saidend sills having openings to receive the ends of said outer members andbeing secured to the ends of the side sills, and means for connectingthe free ends of the inner members of the castings, said means and theinner and outer members of the casting constituting the center sillstructure.

2. In an underframe construction for sills, the free ends of the outermembers excars and in combination, a pair of body tending into openingsin the end sills. bolster castings each having a bolster mem- Intestimony whereof I afliX my signature ber and integraloppositely-extending memin presence of two witnesses. bers to provide asubstantially balanced con- OSWALD S. PULLIAM. struction with the innermembers connected r with means to form a center-sill structure, sidesills, and end sills secured to the side l Vitnesses:

A. C. lVAY, W. G. DOOLITTLE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissionerof Patents, Washington, D; C.

